Mold fob explosive oeaeges



2 Sheets-Sheet 1.

(No Model.)

C. LAMM. MOLD'POR BXPLOSIVB CHARGES.

N0. 425,680. Patented Apr. 15,1890.

@i @if @@@QQW Q @QQ @@@QQW www@ @@@QW i TN: malus renna co., mormnno.,wAsmxoTou, n c

(No Model.) 2 Sheets-Sheet 2.

C. LAMM. MOLD FOR BXPLUSIVB CHARGES,

No 425,680. PatentedApr. 15, 1890.v

UNI-TED I STATES PATENT OFFICE.

CARL LAMM, OF STOCKHOLM, SVEDEN.

MOLD FOR EXPLOSIVE'CHARGES.

, SPECIFICATION forming part of Letters Patent No. 425,680, dated April15, 18.90. Application iled November 26, 1889. Serial No. 331,657. (Nomodel.) Patented in Sweden June 22, 1888, No. 1,591; in Belgium July 12,1888,1To. 82,539 in England August 15, December 18, 1888, and inSwitzerland January 7, 1889, No. 271.

To @ZZ whom, t may concern:

Be it known that I, CARL LAMM, managerof the Bellite Explosive IVorks, asubject of the King of Sweden, and a resident of Stockholm, Sweden, haveinvented new and useful Improvements in and relating to the Manufactureof Explosive Charges and Cartridges, (for which I have obtained patentsin the following countries: Switzerland, No. 271, January 7, 1889; GreatBritain, No. 11,750, dated August 15, 1888; Sweden, No. 1,591, datedJune 22, 1888; Belgium, No. 82,539, dated July 12, 1888; France, No.194,7 85, dated December 15, 1888 Italy, Nos. 27,611 7 38, datedDecember 18, 1888 5 Spain, No. 9,061, dated December 19, 1888, andLuxemburg, No. 1,066, dated December 1,8, 1888,) of which the followingis a specication, reference be had to the accompanying drawings.

My invention relates to apparatus for the manufacture of explosivecharges or cartridges.

In making an explosive charge or cartridge by means of apparatusconstructed according to my said invention I take suitably-pre paredpulverized explosive material, one or more of theingredients of whichare fusible,and Iplace the said material in suitable tubes, cells, ormolds and subject it therein to the action of heat, thus causing thefusible particles of the mass contained in either of the said molds tomelt and envelop the infusible particles thereof. The explosive materialcontained in the said molds is then cooled, thus forming solid blocks,charges, or cartridges of explosive material, which are then removed orejected.

In the accompanying drawings I have shown how my said invention may beconveniently and advantageously carried into practice.

Figure 1 is a plan, and Fig. 2 a vertical longitudinal section, on theline m, Fig. 1, showing one form of my improved apparatus. Fig. 3 is aplan of another form or modification of the said invention. Fig. 4 is avertical longitudinal section on the line yy of Fig. 3, the movablebottom or plate of the box or case hereinafter described being removed.Fig. 5 is a front elevation, partly in longitudi- 1888, No.11,750: inFrance December 15,1888, No. 27,611/738; in Luxemburg December 18, 1888,

170.194.785; in Italy No. 1,066; in Spain December 19,1888,N0.9,064,

nal section, showing the said movable bottom or plate and the pistons orplungers hereinafter described.

Like letters indicate corresponding parts throughout the drawings.

A is the box, case, or frame of the apparatus, which is provided withany. suitable number of molds B. The said molds B extend through thebottom and top covers of thc box or case A, in which they are fitted, soas tor form tight joints therein. They are open at both ends, and arepreferably formed slightly taperingthat is to say, slightly larger indiameter at the upper than at the lower end.

C D are pipes for the admission toandescape from the chamber or space Aaround the molds B in the box or case A of steam, hot air, water, or thelike for heating the apparatus.

E E are pistons or plungers supported upon a plate or frame E and madeto fit easily into and close the lower extremities of the molds B.

E2 E2 are blocks or supports for maintaining the plate or frame E insuch a position relatively to the box or case A that the said pistons orplungers E will be situated in the lower extremities of the molds B, asshown, while the latter are being filled with explosive material andsubjected to the action of heat or cold, as hereinafter specified.

The upper extremities of the molds B are closed by means of loose coversF, provided with projections or pins F for forming in the explosivematerial the holes for the caps or primers. Any desired number of suchholes can be formed in each block or charge of explosive material byproviding a corresponding number of the covers F, each provided with oneproject-ion or pin F. Vhen more than one hole is to be formed in eachblock, the said covers are placed one above another and the projectionsor pins upon the outer cover or covers project through holes provided inthe inner cover or covers. By this arrangement when the molding ot' theexplosive material forming the charge or cartridge is finished, thecover or covers F can be removed froln the said charge or cartridgewithout damaging it, notwithstanding that the said cover or coversrequire to be rotated for this purpose. To perform this operation, eachof the covers Fis rotated upon or about vthe axis of its pin orprojection F as soon as it is raised, in the manner hereinafterdescribed, so as to be clear of the tube B, and the said pin orprojectionis thereby loosened in the explosive material.

The operation of the apparatus is' as follows-that is to say, the moldsB are filled with the prepared pulverized and partiallyfusible explosivematerial, which is pressed down firmly therein, and the loose covers Fare placed in position, so that the projections or pins F will enter thesaid explosive material and form the holes for the caps or primers.Steam, hot air, hot water, or other heating medium is then admittedthrough the pipe C to the chamber or space A in the box or case A. andallowed to circulate around the molds B, thereby heating the latter andcausing the fusible particles of the mass of explosive material to meltand envelop the infusible particles of the same. The supply of steam orother heating medium is then cut off and cold water is admitted to thesaid space A.v This causes the explosive material in the said molds B toset or solidify, so that the contents of each mold forms a solid block,charge, or

cartridge, which can be forced out by the action of the plungers orpistons E. For this purposethe blocks E2, which normally retain the saidpistons or plungers in the lower extremities of the said molds, areremoved and the pistons or plungers E are then pushed into the saidmolds B, and the charges or cartridges are thus pushed out or ejected.When the loose cover F is raised above the mold B, it is turned orrotated, as hereinbefore mentioned, before removal, in order to loosenor free the pin or projection F in the explosive material. When two ormore covers F are employed, each cover is rotated as soon as it is clearof the mold, and the said covers are thus removed'one by one withoutdamaging the charge or cartridge.

Figs. 3 to 5 show a modiiication of my apparatus, wherein the cells or`molds B are formed of various shapes.

It is evident that the cells or molds may be adapted for the manufactureof charges or cartridges of any desired shape, or for the manufacture ofblocks of explosive material, to be afterward put together to form largecharges for certain blasting operations.

l. The herein-described cartridge apparatus, consisting of theopen-ended tubes or molds B, having loose coversvF inserted in theirupper ends, the frame or case A, having a heatingchamber A immediatelysurrounding said molds, the pistons or plungers E, inserted in the lowerends of the molds, the plate E', supporting said plungers, and theremovable blocks E2, located between the case A and plate E',substantially as described.

2. The herein-described cartridge apparatus, consisting of theopen-ended tubes or molds B, the loose mold-covers F, having pins Fprojecting into the molds, the case A, having a heating-chamber Aimmediately surrounding the molds and provided with pipes C D for theadmission and escape of the heating medium, the pistons or plungers E,inserted in the lower ends of the molds, the plate E', supporting saidplungers, and the removable blocks E2 between the case Aand plate E',substantially as described.

In testimony whereof l have hereunto signed my name in the presence oftwo subscribing witnesses.

CARL LAMM. y

Witnesses:

PERCY WooDwARD, A. W. HEATH.

